Question

Solve for base.

Part (after increase)

$55.20



Rate of Increase

15%


The base is $?

Answer 1

The base amount is $48.

Explanation:

We are given the following in he question:

Amount after increase = $55.20

Rate of increase = 15%

Let x be the base amount.

Thus, we can write:

`x + (15\% * x ) = 55.20\\\\x + ((15)/(100)* x) = 55.20\\\\x + 0.15x = 55.20\\1.15x = 55.20\\\\x = (55.20)/(1.15)\\\\x = 48`

Thus, the base amount is $48.